A101989 Largest prime which can be formed from digits of n-th prime p(n).

2, 3, 5, 7, 11, 31, 71, 19, 23, 29, 31, 73, 41, 43, 47, 53, 59, 61, 67, 71, 73, 97, 83, 89, 97, 101, 103, 701, 109, 311, 271, 311, 317, 193, 941, 151, 751, 631, 761, 317, 971, 811, 911, 193, 971, 991, 211, 223, 227, 229, 233, 293, 421, 521, 257, 263, 269, 271, 727

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

a(6)=31 because p(6)=13 and 31 is the largest prime which can be made from digits 1,3.

Mathematica

Table[Max[Select[FromDigits/@Permutations[IntegerDigits[Prime[n]]], PrimeQ]], {n, 60}] (* Harvey P. Dale, May 03 2018 *)

Crossrefs

Sequence in context: A123214 A119834 A095180 * A098922 A265324 A004087

Adjacent sequences: A101986 A101987 A101988 * A101990 A101991 A101992

Keyword

base,easy,nonn

Author

Zak Seidov, Jan 29 2005

Status

approved